ULTRA-SONIC TESTING. A nondestructive test applied to sound-conductive materials having elastic properties for the purpose of locating inhomogeneities of structural discontinuities within a material by means of an ultrasonic beam.
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TOUGHNESS. The ability of a metal to absorb energy and deform plastically before fracturing.
STABILIZING TREATMENT. (1) Before finishing to final dimensions, repeatedly heating a ferrous or nonferrous part to or slightly above its normal operating temperature […]
SUBCRITICAL ANNEALING. A process anneal performed on ferrous alloys at a temperature below Ac1.
ULTIMATE STRENGTH. The maximum conventional stress (tensile, compressive or shear) that a material can withstand.